docbrown/spec/requests/email_subscriptions_spec.rb

require "rails_helper"

RSpec.describe "EmailSubscriptions" do
  let(:user) { create(:user) }

  before do
    allow(User).to receive(:find).and_return(user)
  end

  def generate_token(user_id)
    Rails.application.message_verifier(:unsubscribe).generate({
                                                                user_id: user_id,
                                                                email_type: :email_mention_notifications,
                                                                expires_at: 31.days.from_now
                                                              })
  end

  describe "GET /email_subscriptions/unsubscribe" do
    it "returns 200 if valid" do
      get email_subscriptions_unsubscribe_url(ut: generate_token(user.id))
      expect(response).to have_http_status(:ok)
    end

    it "does unsubscribe the user" do
      get email_subscriptions_unsubscribe_url(ut: generate_token(user.id))
      user.reload
      expect(user.notification_setting.email_mention_notifications).to be(false)
    end

    it "handles error properly" do
      expect { get email_subscriptions_unsubscribe_url }
        .to raise_error(ActiveRecord::RecordNotFound)
    end

    it "won't work if it's past expiration date" do
      token = generate_token(user.id)
      Timecop.freeze(32.days.from_now) do
        get email_subscriptions_unsubscribe_url(ut: token)
        expect(response.body).to include("Token expired or invalid")
      end
    end
  end
end